A man, who has the second confirmed case of Middle East Respiratory Syndrome in the U.S., traveled from Jeddah, Saudi Arabia on May 1, stopping through London, Boston and Atlanta before arriving in Orlando, Fla.

The first flight was Saudi Airlines flight 113 to London, before a transfer at Heathrow, according to a Public Health England press release. The U.S. government did not identify the flight information for the other legs.

Health officials did not immediately release additional detail about his travels or his week in Florida, except to say he was not at any theme parks and remained in the Orlando area to see family.

The patient is hospitalized and doing well, according to the Centers for Disease Control and Prevention.

Health officials are trying to contact as many as 500 people who were on the three flights within the United States to let them know the situation and watch for symptoms. People on the flight from Jeddah to London also will be contacted, CDC officials said.

Middle East Respiratory Syndrome, or MERS, is a respiratory illness that begins with flu-like fever and cough but can lead to shortness of breath, pneumonia and death. A third of those who develop symptoms die from it.

Most cases have been in Saudi Arabia or elsewhere in the Middle East. But earlier this month a first U.S. case was diagnosed in a man who traveled from Saudi Arabia to Indiana.

That man was a health-care worker at a hospital in Saudi Arabia's capital city who flew to the United States on April 24. After landing in Chicago, the man took a bus to Munster, Indiana where he became sick and went to a hospital on April 28.

The man, an American, improved and was released from the hospital late last week. Tests of people who were around the man have all proved negative, health officials have said.

Details about the newest case were not immediately released Monday.

MERS belongs to the coronavirus family that includes the common cold and SARS, or severe acute respiratory syndrome, which caused some 800 deaths globally in 2003.

The MERS virus has been found in camels, but officials don't know how it is spreading to humans. It can spread from person to person, but officials believe that happens only after close contact. Not all those exposed to the virus become ill.

But it appears to be unusually lethal -- by some estimates, it has killed nearly a third of the people it sickened. That's a far higher percentage than seasonal flu or other routine infections. But it is not as contagious as flu, measles or other diseases. There is no vaccine or cure and there's no specific treatment except to relieve symptoms.

Overall, at least 400 people have had the respiratory illness, and more than 100 people have died. So far, all had ties to the Middle East region or to people who traveled there.

PEOPLE ARE WONDERING HOW CON TATION IS IT? THE INFECTED PASSENGER FLEW THROUGH LOGAN ON MAY 1 WITH STOPS IN BOSTON, ATLANTA. THE PERSON HAD A FEVER AND A MILD COUGH. COMMON SYMPTOMS AT THE TIME BUT THERE IS NOTHING COMMON ABOUT MERS. THE QUESTION IS HOW WORRIED SHOULD WE BE THAT SOMEONE CARRIED IT THROUGH BOSTON? WE'RE NOT CONCERNED ABOUT PEOPLE PASSING THROUGH TERMINAL E ON MAY 1. THIS IS NOT AN -- THE SYMPTOMS RESEMBLE THE FLU. FEVER, COUGH, TROUBLE BREATHING. MORE THAN 538 PEOPLE. SIX SO FAR. 105 PEOPLE HAVE DIED. WHAT IS IMPORTANT TO KNOW, THOUGH, IS IF PEOPLE WERE GOING TO GET SICK AS A RESULT OF THIS EXPOSURE, THEY WOULD BE SICK BY MAY 15 BECAUSE THAT IS HOW LONG THE INCUBATION PERIOD IS. THE CENTERS FOR DISEASE CONTROL IS TRYING TO CALM FEARS TONIGHT SAYING THE DISEASE SPREADS THROUGH LONG-LASTING REPEATED CONTACT WITH AN INFECTED PERSON. NOT CASUAL.

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